Home » Nanometer-scale modification of biological membranes by field emission scanning tunneling

TITLE

Nanometer-scale modification of biological membranes by field emission scanning tunneling

AUTHOR(S)

Garcia, Ricardo

PUB. DATE

February 1994

SOURCE

Applied Physics Letters;2/28/1994, Vol. 64 Issue 9, p1162

SOURCE TYPE

Academic Journal

DOC. TYPE

Article

ABSTRACT

Examines the nanometer-scale modification of semiconductor and metallic samples by field emission scanning microscopy. Methods for the fabrication of nanometer-scale structures and devices; Parameters controlling the tip-membrane distance; Degree of precision and potential of the method for nanometer-scale modification.

Field emission studies have been carried out on undoped as well as N- and B-doped graphene samples prepared by arc-discharge method in a hydrogen atmosphere. These graphene samples exhibit very low turn-on fields. N-doped graphene shows the lowest turn-on field of 0.6 V/Î¼m, corresponding to...

We fabricated nanoscale field electron emitters formed by highly-doped silicon nanopillars on a silicon membrane. Electron-beam induced deposition of carbon-based contaminants is employed as a probe of the spatial activity of electron emission from the nanopillars. In stark contrast to the...

A large area arrays (ca. 40 cm2) of CdS nanotube on silicon wafer are successfully fabricated by the method of layer-by-layer deposition cycle. The wall thicknesses of CdS nanotubes are tuned by controlling the times of layer-by-layer deposition cycle. The field emission (FE) properties of CdS...

Carbon-nanotube tips are plastically deformed during field emission. High-resolution transmission electron microscopy and structural simulations suggest that the deformed structure of the closed nanotube is explained by heterogeneous nucleation of the pentagonal and heptagonal carbon ring pairs,...

Supersonic cluster beam deposition has been used to produce films with different nanostructures by controlling the deposition parameters such as the film thickness, substrate temperature and cluster mass distribution. The field emission properties of cluster-assembled carbon films have been...

We report on the direct observation of the growth of nanoprotrusions on iridium field-emission tips. For clean, protrusion-free field emitters, the field emission originated from crystal planes with low-work-function values. However, with continuous operation, we observed the growth of...

Nanowires are grown from a cold-field-emission tip in the presence of a precursor, typically an organometallic or organic compound. Electron emission from the newly grown nanowire tip continues the growth and can give rise to nanowires that are tens of microns long. Single nanowires are obtained...